When you have multiple loan offers with different interest rates, it’s not always obvious how much that difference actually costs you over the full loan term. This interest rate comparison calculator lets you enter two or more rate offers side by side, along with the same loan amount and term, so you can see the exact difference in monthly payment and total interest between them rather than guessing based on the rate numbers alone.
Interest Rate Comparison Calculator
Compare up to 3 real loan offers — now with fees for a true total-cost picture.
Compare Interest Rates & Fees
Monthly Payment Comparison
Detailed Cost Breakdown
| Metric | Option A | Option B | Option C |
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Even a one or two percentage point difference can add up to real money over a five or six year loan, which is why comparing offers before signing is worth the extra few minutes. If you’re not sure what rate you should realistically expect, our article on how your credit score affects your car loan rate can help you set expectations, and our comparison of dealer financing vs. bank auto loans explains why offers from different lender types often differ in the first place.